From 1beaab905220d87573846079cbc356c01d6c05cf Mon Sep 17 00:00:00 2001 From: Alex Deucher Date: Thu, 6 Mar 2014 18:09:52 -0500 Subject: [PATCH] drm/radeon/atom: select the proper number of lanes in transmitter setup We need to check for DVI vs. HDMI when setting up duallink since HDMI is single link only. Fixes 4k modes on newer asics. bug: https://bugs.freedesktop.org/show_bug.cgi?id=75223 Signed-off-by: Alex Deucher Cc: stable@vger.kernel.org --- drivers/gpu/drm/radeon/atombios_encoders.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/gpu/drm/radeon/atombios_encoders.c b/drivers/gpu/drm/radeon/atombios_encoders.c index 2cec2ab02f80c..607dc14d195e3 100644 --- a/drivers/gpu/drm/radeon/atombios_encoders.c +++ b/drivers/gpu/drm/radeon/atombios_encoders.c @@ -1314,7 +1314,7 @@ atombios_dig_transmitter_setup(struct drm_encoder *encoder, int action, uint8_t } if (is_dp) args.v5.ucLaneNum = dp_lane_count; - else if (radeon_encoder->pixel_clock > 165000) + else if (radeon_dig_monitor_is_duallink(encoder, radeon_encoder->pixel_clock)) args.v5.ucLaneNum = 8; else args.v5.ucLaneNum = 4; -- 2.39.5